UIViewControllerAnimatedTransitioning with Safe Area Insets on iPhone X

Question

When animateTransition is called on the transitioning delegate the Safe Area Insets have yet to be set on the \'to view controller\'.

I\'ve tried forci

Answer 1

Ensure that the destination view controller is actually in the view hierarchy when you call layoutIfNeeded. I had this same problem, oddly only affecting certain orientations, and fixed it by adding the second and third lines below:

UIViewController * toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

// Added these two lines:
toViewController.view.frame = [transitionContext finalFrameForViewController:toViewController];
[transitionContext.containerView addSubview:toViewController.view];

[toViewController.view setNeedsLayout];
[toViewController.view layoutIfNeeded];